Hager, the twin daughter of former President George W. Bush, and her husband, Henry, have been married for four years.

During a phone call on the show, former President Bush said he’s “fired up” about becoming a grandfather, and former first lady Laura Bush said she’s “thrilled.” It will be the couple’s first grandchild.

We're sorry, but this content is not available to your web browser.

Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.